Cloud computing may be the buzzword that enterprises and startup companies are talking about. But what really powers your cloud computing initiatives are the infrastructure run by the likes of Platform Equinix, with their server clusters and data centers. One big concern here, of course, is energy use, which is why cloud service and data center providers are trying to reduce their energy costs.

In Singapore, Equinix reports to have saved S$1.7 million (US$1.3 million) annually from savings of more than 8 million kilowatt hours. This has been done in partnership with SynapSense, which did a six-month datacenter cooling efficiency study with Equinix starting 2012, after the two companies were chosen by the Singapore Infocomm Development Authority as the winners of the Green Data Center Innovation Challenge last summer.

Equinix implemented SynapSense’s Data Center Optimization Platform in its SG1 Cooling Energy Efficiency Project. In particular, this involved using real-time environmental monitoring and active control, in order to optimize the energy needed to cool datacenter facilities.

According to SynapSense CEO Bart Tichelman, the study actually exceeded the companies’ expectations. “We were pleased to partner with Equinix by providing the SynapSense Data Center Optimization Platform to help the Singapore government and Equinix achieve unprecedented data center energy savings.”

SynapSense is a U.S.-based startup that offers hardware- and software-solutions that enable data center facilities to save money from energy use. The company raised a US$16 million series C financing in 2011, bringing its capitalization to a total of US$39.5 million, which was intended for the company’s international expansion.